Keep the filter line edit of the Models Browser disabled until the models list has been populated. This fixes interface from crashing in case the user types in the line edit and the list is not populated.
Remove unnecessary lines of code.
Do not close the Models Browser if double clicked on the loading message
Merge remote-tracking branch 'upstream/master' into 19801
Merge pull request #3081 from binaryking/19801

Code Review for Job #19801